Outward or Inward Bound

1. Which option did you choose?
Troposphere (Above the crust)
Upper crust (Below the surface)
What do you know?
What do you want to find out?
What kind of answers do you expect?

2. Define the variables you will use in your equation. Let one variable be the distance away from the surface and the other variable be the temperature.
The y-intercept is the starting position at Earth's surface. The coordinates of the y-intercept are(0, temperature at Earth's surface).

3. What is the b-value of the y-intercept for your equation?
The slope is the rate of change for temperature.
If the temperature increases as the distance from the surface increases, then the slope is positive.
If the temperature decreases as the distance from the surface increases, then the slope is negative.

4. What is the slope of your equation?

5. Write an equation that models the relationship between your variables.

6. Identify and explain what each term represents in the temperature model.
a. The slope

b. The y-intercept

7. Identify three points on your line.

8. Using the coordinates from question 7,calculate the slope of your line. Does it match the slope from your model?

9. On the graph (PICTURE), plot the points and sketch your line.

10. Complete the sentence for your layer.
The troposphere is the region that starts at Earth's surface and ends between ____ km and ____ km above Earth.

The upper crust is the region that starts at Earth's surface and ends between ____ km and ____ km below Earth's surface.

Use the temperature equation to find the temperature range for your layer.

11. What is the temperature at the end of your layer that is farthest from the surface?

12. For the layer you selected, the temperature ranges from the temperature at Earth's surface, __, to __.